Don't overwork yourself.

If you’re already an
overachiever, have been dubbed a “workaholic,” or are generally
exhausted, then you need to slow down and break the habit of setting
impossible goals for yourself in the New Year, Taylor says. “You may
have to recalibrate and expect, say 75% of your workload to be achieved
in a set period in order to feel fulfilled. If you’re a manager, this
approach may take some of undue pressure off staff, too.”